Abstract: Visual-inertial odometry uses visual input from a camera and inertial motion measurements to track the motion of an object. This technique can be applied to surveying urban environments, such as a curb or streetscape, that are impractical to survey with a surveyor's wheel, GPS, or imagery from cars. Making visual-inertial odometry measurements of a curb with a handheld surveying device yields relative measurements from a starting point to an ending point on the curb. These relative measurements can be pinned to an absolute coordinate frame using measurements of gravity made while acquiring the visual-inertial odometry measurements and absolute measurements of the starting and ending points.

Abstract: Visual-inertial odometry uses visual input from a camera and inertial motion measurements to track the motion of an object. This technique can be applied to surveying urban environments, such as a curb or streetscape, that are impractical to survey with a surveyor's wheel, GPS, or imagery from cars. Making visual-inertial odometry measurements of a curb with a handheld surveying device yields relative measurements from a starting point to an ending point on the curb. These relative measurements can be pinned to an absolute coordinate frame using measurements of gravity made while acquiring the visual-inertial odometry measurements and absolute measurements of the starting and ending points.

Abstract: A method performed by one or more processing devices includes retrieving information indicative of a plurality of stages in an auction for content items; retrieving an interface hierarchy including a plurality of interfaces; wherein an interface, from the plurality, is associated with a stage in the auction and specifies one or more operations to be performed at the stage; retrieving information indicative of a content item participating in the auction; identifying a stage to which the content item has progressed; associating the content item with an interface associated with the stage identified; performing one or more operations specified by the interface associated with the content item; and populating, based on performing, the interface associated with the content item with information for the stage identified.

Abstract: Example techniques for determining a price for content may include the following operations: obtaining bids from content providers, where the bids correspond to amounts that the content providers will pay to present content on a portal hosted by a publisher; obtaining surcharges corresponding to an effect on the publisher of presenting content from the content providers on the portal; using one or more processing devices to adjust the bids in accordance with corresponding surcharges to thereby produce adjusted bids; comparing the adjusted bids to determine a winner of an auction to present content on the portal hosted by the publisher; determining a price for the winner to pay based on the surcharge; and charging the winner the price for presenting content on the portal.

Abstract: A product recommendation system and method identify product characteristics from customer reviews using a semantic analysis of the product review text. The semantic analysis identifies negative sentiment keywords associated with one or more product characteristics in the customer review and assigns each negative sentiment keyword a value. The value of each identified negative sentiment keywords is then used to calculate a score for the product characteristic to which the negative sentiment keyword is correlated. A product recommendation report comprising the identified products, their product characteristics, a list of scored product reviews, or a combination thereof is then presented to the end user.